Hi Mr. Wood! It's Matt from P.6! I have an answer to #3. I think to stop the CO2 rising, heating, sea rising, and melting, we need to stop doing what we're doing. We need to plant more plants to get rid of the CO2. We need to control polution for many things like CO2 and CFCs. WE need to stop burning for obvious reasons. Finally, we need to conserve energy and water.